Improvement in machines for forming metallic shoe-shanks



'2 Sheeits-Sheet'l. H. H. JENKINS. Machine for Forming MetallieShoe-Shanks.

No. 216.330. Patented June 16, 1879.

. Ft .1. Witnesses. f w Inventor.

N PETER8, PHOYO-LII'HOQRAPHER. WASHINGTON. D C.

2 SheetsSheet 2.

H. H. JENKINS.

Machine for Forming Metallic Shoe-Shanks 510.216.330. Patented June 10,1879 m I m r I T- 4T 19 H B w w L; 6 1 I Fig.3..

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ozw'jiww/ by "UNITED STATES PATENT OFFICE.

HIRAM H. JENKINS, OF SOUTH ABINGTON, MASSACHUSETTS.

IMPROVEMENT IN MACHINES FOR FORMING METALLIC SHOE-SHANKS.

Specification forming part of Letters Patent No. 2 I 6,330, dated June10, 1879; application filed March 3, 1879.

To all whom it may concern:

Be it knownthat I, Hrenn H. JENKINS, of South Abington, in the county ofPlymouth and State of Massachusetts, have invented certain new anduseful Improvements in Machines for Forming Metallic Shoe-Shanks, ofwhich the following, takenin connection with the accompanying drawings,is a specification.

My invention relates to a machine for manufacturing metallicshoe-shanks, and particularly to that part of the machine which impartsto the straight shank-blank the desired curvature in the direction ofits length and thickness, and may be incorporated in the same machinewith the devices for cutting the blank from the plate, or it may be usedseparate from and independent of said cutting devices and the saidinvention consists in a novel combination .and arrangement of the parts,as hereinafter more fully set forth and claimed, whereby the shoe-shankblank is conducted from the hopper to the dies, then bent into propershape, and discharged, the work of conducting the blanks to the dies andimparting motion to said dies for bending the blanks being automaticallyperformed by the same machinery in one and the same operation.

Figure l is a plan of a machine embodying my invention. Fig. 2 is asectional side elevation, with a portion of the frame broken away; andFig. 3 is a vertical section on line as w on Figs. 1 and 2.

A is the base of the machine, from which rise the standards B B,connected at their top ends by the cross-head G, to the under side ofwhich is secured, in any convenient manner, the male or convexbending-die D, directly beneath which the female die E, having its uppersurface shaped to fit the under face of the die D, is mounted uponslides or guideways a a, formed upon the standards B B, in such a mannerthat it may be reciprocated vertically thereon.

F is the drivingshaft, mounted in suitable hearings in the standards BB, and having firmly secured thereon the operating wheel or pulley G,eccentric H, and crank l, and may be revolved by hand or by a beltleading from any revolving shaft onto the wheel G, in an obvious manner.

The eccentric H is connected by the eccentric-rod H to the under side ofthe die E, and by its rotation imparts to said die a reciprocatin gvertical movement toward and from the die D.

J and J are two drums or pulleys, mounted upon shafts b and b, havingtheir hearings in the stands K and K, respectively, and each havingtheir' peripheries grooved to receive the two narrow belts L L, saiddrums or pulleys being so arranged, relative to the bending-dies, thatthe upper horizontal portions of the belts L L, extending from one drumto the other, pass between said dies in aplane below the extreme lowerportion of the upper die, D, and above the extreme upper portion of thelower die, E, when it is in its lowest position, said lower die, E,having out through its upper surface two slots, 0 0, directly beneathsaid belts, and of such a width as will permit the die E to move upwardinto contact with the die D without disturbing the belts.

The belts L L each have formed thereon or secured thereto, at regularand equal inten vals, a series of lugs, d d, projecting outwardtherefrom a distance not greater than the thickness of the strip ofsheetsteel, (which I term a blank,) to be conveyed to and acted upon bythe bending-dies.

M is a hopper, adjustably secured to the standard M in a positionimmediately above the belts L L, with the lower edge of its side that istoward the dies just far enough above said belts to permit the freepassage of a single blank resting upon said belt.

The drum J has an intermittent rotary mo; tion imparted thereto by meansof the ratchetwheel N, secured to the shaft 1), the pawl O, levers P andQ, rocker-shaft It, connectingrod S, and the crank I secured to the endof the driving-shaft F.

The pawl O is secured to the lever P by means of the adjustable block 0,pin f, and set= screw 9, so that by adjusting the block 0 to a greateror less distance from the axis of mo tion of said lever the stroke ofthe pawl 0 may be varied, and thereby the distance traveled by the beltsL L at each intermittent movement thereof may be regulated.

The stands K, which carry the drum J, are

adjustably secured to the base A in such a the blank, and so shaped asto serve to correct any inaccuracy in the position of the blank on thebelt or belts occasioned by accidental endwise movement thereon duringthe forward movement of the belt or belts, and insure the properpresentation of the blank to the action of the bending-dies.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is-- 1.. In a machine for bending metallic shoeshanks,the die E, formed with slots 0 c at its face, through which the beltspass,-die D, endless belts L, with lugs 01, secured transverselythereon, and drums J J, the one, J, adapted to be adjusted to tightenthe belts, substantially as and for the purpose described.

2. The adj ustable hopper M, in combination with the drums J J, carryingendless belts L, with lugs d, and dies D E, with slots 0, to permit thepassage of the belts, substantially as and for the purposes described.

3. The combination, in a machine for bending metallic shoe-shanks, ofadj nstable hopper M, endless belts L d, stationary drum J, adjustabledrum J and guides T, whereby the shoe-shank blanks are fed from thehopper and conducted between the dies in a straight position to bepressed into form, substantially as described.

4. In a machine for forming metallic shoeshanks, in combination with thedrums J J, with endless belts L d, the ratchet-wheel N, pawl O, levers PQ, rock-shaft R, rod S, and

crank I, for giving the drums and belts an' intermittent rotary. motion,for the purpose specified.

5. The combination and arrangement, in a machine for forming metallicshoe-shanks'of the hopper M, endless belts L d, drums J J, and dies D E,ratchet-wheel N, pawl O, levers P Q, rod S, crank-arm I, eccentric H,and cocentric-rod H, for giving an intermittent rotary motion to thebelts and imparting motion to the dies, whereby the work of conductingthe blanks to the dies and bending the same is automatically performedat one and the same operation.

Executed at Boston, Massachusetts, this 1st day of March, A. D. 1879.

HIRAM H. JENKINS.

Witnesses:

ROLAND O. LINooLN, GHAs. H. DREW.

